Chapter 11- The Eye Flashcards
biometry
the study of numeric observations based on biological observations
biometrist
one who is skilled in biometry
conjunctivia
inner lining of eyelids
conjunctivitis
inflammation of inner lining of eyelids
cornea
central transparent part of outer coat of eye covering iris and pupil. Latin: web, tunic
lacrimal
pertaining to tears and tear apparatus
nasolacrimal
passage from lacrimal sac to nose
opthamology
diagnosis and treatment of diseases of the eye
orbit
the bony socket that holds the eyeball
periorbital
pertaining to tissues around the orbit
photophobia
fear of the light due to light sensitivity
antibiotic
substance that has the capacity to inhibit the growth of/destroy bacteria
blepharitis
inflammation of the eyelid
blepharoptosis
drooping of the upper eyelid
blepharoplasty
surgical repair of the eyelid
contagious
infection that can be transmitted from person to person. Latin: touch closely
contaminate
to cause an infectious agent to be on any surface
hordeolum
abcess in an eyelash follicle. Latin: stye
ptosis
sinking down of the upper eyelid. Greek: drooping
amblyopia
failure of/incomplete development of the pathways of vision in the brain
esotropia
turning the eye inward toward the nose
exotropia
turning the eye outward away from the nose
extrinsic
a muscle located entirely outside the structure under consideration
intrinsic
a muscle located entirely inside the structure under consideration
ocular
pertaining to the eye
optometrist
someone skilled in the measurement of vision
stereopsis
three-dimensional vision
strabismus
turning of an eye away from its normal position
avascular
without a blood supply
iris
colored portion of the eye with the pupil in its center, greek.
lens
transparent refractive surface behind the iris
presbyopia
difficulty in nearsighted vision started in middle and old age
pupil
opening in the center of the iris that allows light to reach the lens
refract
bend or change direction of a ray of light
retina
light-sensitive innermost layer of the eyeball
sclera
fibrous outer convering of the eyeball and the white of the eye
scleritis
inflammation of the sclera
choroid
region of the retina and uvea
fovea centralis
small pit in the center of the macula that has the highest visual acuity
macula lutea
yellowish spot on the back of the retina, contains the fovea
optic
pertaining to the eye or vision
photoreceptor
a photoreceptor cell receives light and converts it into electrical impulses
uvea
middle coat of the eyeball, includes the iris, ciliary body, and the choroid. Latin: vascular layer
uveitis
inflammation of the uvea
visual acuity
sharpness and clarity of vision
astigmatism
inability to focus rays of light that enter the eye in different planes
concave
having a hollowed surface
convex
a surface that is curved outward
foramen
an opening through a structure
hyperopia
able to see distant objects, but not close ones
in situ
in the correct place
keratomileusis
(surgery that) cuts and shapes the cornea
keratomy
inscision in the cornea
myopia
able to see close objects, but not distant ones
radial
diverging in all directions from any given center
cataract
complete or partial opacity of the lens
flourescein
dye that produces a vivid green color under a blue light (helps diagnose corneal abrasions and foreign bodies in the eye)
glaucoma
increased intraocular pressure
intraocular
pertaining to the inside of the eye
opthalmia neonatorum
conjunctivitis in a newborn’s eyes
pollution
condition that is unclean, impure, and a danger to health
angiography
radiography of vessels after injection of contrast material
angiogram
radiogram of vessels after injection of contrast material
laser surgery
use of a concentrated, intense narrow beam of electromagnetic radiation for surgery
opthalmoscope
instrument for viewing the retina
photocoagulation
using light (from a laser beam) to form a clot
retinoblastoma
malignant neoplasm of primitive retinal cells
retinopathy
disease of the retina, degenerative
fundus
part farthest from the opening of a hollow organ
fundoscopy
examination of the fundus (retina) of the eye
Ishihara color system
test for color vision defects
Jaeger reading cards
types of different sizes for testing near vision
peripheral
pertaining to the periphery or external boundary
Snellen letter chart
test for acuity of distant vision
tonometer
instrument for determining intraocular pressure